1978  Trigonogastrites Zhao, Liang & Zheng: 138, 181.
     2002  Pseudotirolites.-Leonova: S102.

Type species: Trigonogastrites changxingensis Zhao, Liang & Zheng, 1978, p.138; OD.

[Zhao et al., 1978]: Shell rather large, evolute, thickly discoidal. Whorls depressed ventro-dorsally. Venter wide, broadly
arched, marked by a medial keel. Lateral sides narrow, inclining steeply toward the umbilicus, marked by transverse ribs
and  ventro-lateral nodes. Umbilicus wide, deep and funnel shaped. Suture line ceratitic.